Wrench



(No Model.)

H. MQDONALD WRENCH.

.No. 498,137. Patented May 23, 1893.

' UNITED STATES PATENT OFFICE.

HUGH MCDONALD, OE WILLIAMSPORT, PENNSYLVANIA.

WRENCH.

SPECIFICATION forming part Of Letters Patent NO. 498,137, dated May 23,1893.

Application filed December 5, 1892. Serial No. 454,168. (No model.)

To all whom it may concern:

Be it known that I, HUGH MCDONALD, a citizen of the United States,residing at Williamsport, in the county of Lycoming and State ofPennsylvania, have invented certain new and useful Improvements inWrenches; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to wrenches and more particularly to that classknown in the art as nut wrenches, and consists of certain novel anduseful features of construction clearly set forth in the followingspecification and more specifically pointed out in the claims.

In order that my invention may be fully understood I have illustrated itin the accompanying drawings in which- Figure 1 is a side elevation ofthe handle and fixed jaw. Fig. 2 is a similar view of the wrench readyfor use, and Fig. 3 is an end view of the fixed jaw.

Similar letters of reference indicate indentical parts throughout thedrawings, being referred to in the specification.

In the ordinaryconstruction of wrenches of the kind shown in thedrawings, the handle is either cored to permit the insertion of theadjusting screw, or else is recessed upon one side leaving the screwexposed and liable to become clogged and inoperative by reason of dust,filings or rust.

In my improved construction I provide the handle A upon one side with arectangular recess a extending through a portion of its length andterminating in a transverse opening a for the receipt of the adjustingnut O. I also provide a longitudinal opening a passing through the endof 'the handle from said transverse opening a. The handle is alsoprovided with a projection b which forms the fixed jaw of'the wrench.The walls of the rectangular recess Ct are provided near the upper edgeswith grooves a adapted to receive a slide a which when in place is flushwith the top of said walls and forms a continuous surface for one sideof the handle.

The movable jawB is constructed substantially as shown in the drawingsand consists of the part B similar in form to the projection b andprovided with the shank b screw threaded at a portion of its length as band having its outer end formed preferably like the blade of a screwdriver 6 which when the jaws are closed upon each other projects throughthe handle.

The mode of operating my improved device is obvious. The slide a beingremoved the shank bis put in place the screw threaded portion passingthrough the adjusting nut O of ordinary construction which is held fromdisplacement by the said shank and by the shoulders at, the end of saidshank having free play in and through the opening a in the handle. Theslide may then be inserted and holds the shank in place, and at the sametime protecting it from dust or rust. The shank may be inserted howeverwithout removing the slide. The movable jaw is adjusted in the ordinarymanner by means of the nut C and the shank is made of such a length asthat when the jaws are closed the end of said shank formed as describedprojects from the end of the handle and may be used as a screw driver.

WhatI claim, and desire to secure by Letters Patent, is-

1. In a monkey wrench the handle provided with a fixed jaw and alongitudinal recess at the end adjacent the same, the side walls of thesaid recess extending the full width of the handle in combination withthe movable jaw, the nut and a removable plate closing the recess of thehandle, said closing plate being held between the walls of said recess,substantially as described.

2. In amonkey wrench the handle provided with a fixed jaw and alongitudinal recess at the end adjacent the same, the side walls of thesaid recess extending the full width of the handle and provided withgrooves to receive the closing plate in combination with the movablejaw, the nut and a removable plate closing the recess engaging saidgrooves and held thereby between the walls of the recess, substantiallyas described.

3. In a monkey Wrench the handle provided with a fixed jaw, and alongitudinal recess, the side walls of said recess being provided withgrooves, in combination with a movable jaw and means for operating thesame and a removable plate adapted to engage said IO grooves and closesaid recess, substantially as described.

In testimony whereof Iaffix my signature in presence of two witnesses.

HUGH MCDONALD. Witnesses:

JOHN H. WATSON, J. W. HAYS.

